host_port[0] = str.substring(0,i);
host_port[1] = str.substring(i+1);
String server_identifier = ""; //for bootstrapping, can be ""
String type = CLEAR_TEXT; //will be clear_text for bootstrapping
SocketInfo socketInfo = new SocketInfo(
type, host_port[0], Integer.parseInt( host_port[1]) );
List<SocketInfo> sil = new ArrayList<SocketInfo>(1) ;
sil.add( socketInfo ) ;
return new ClusterInstanceInfo(server_identifier, weight, sil);